Is TOWN OF DISCOVERY BAY's water safe to drink?
TOWN OF DISCOVERY BAY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 16,790 people get their water from it, across 6,163 connections.
How this compares nationally
Out of 12,903 systems in this dataset, TOWN OF DISCOVERY BAY ranks 5,613th by violation burden (57th percentile) - 3 violations total, 3 health-baseds.
How TOWN OF DISCOVERY BAY compares within CA
CA's 803 covered systems average 5.8 health-based violations each; TOWN OF DISCOVERY BAY carries 3, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for TOWN OF DISCOVERY BAY is from 1997-01-09 (health-based: 1997-01-09). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
TOWN OF DISCOVERY BAY's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Everything on this page is TOWN OF DISCOVERY BAY's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 3 health-based violations on file for TOWN OF DISCOVERY BAY - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.